FCGI versions 0.44 through 0.82, for Perl, include a vulnerable version of the FastCGI fcgi2 (aka fcgi) library

{
  "id": "a34fcf2207c3152255b273050b397e77eb987352576e7bb509b41c4a1f41f4f4",
  "url": "https://osv.dev/vulnerability/CVE-2025-40907",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "FCGI versions 0.44 through 0.82, for Perl, include a vulnerable version of the FastCGI fcgi2 (aka fcgi) library",
    "summary": "FCGI versions 0.44 through 0.82, for Perl, include a vulnerable version of the FastCGI fcgi2 (aka fcgi) library. The included FastCGI library is affected by CVE-2025-23016, causing an integer overflow (and resultant heap-based buffer overflow) via crafted nameLen or valueLen values in data to the IPC socket. This occurs in ReadParams in fcgiapp.c.",
    "evidence": "osv:CVE-2025-40907",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-40907",
      "aliases": [
        "CVE-2025-40907"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/fastcgi-archives/fcgi2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "12ae40e58f6b1d8325408ff6765894f09994f5a9"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "12ae40e58f6b1d8325408ff6765894f09994f5a9"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "2.4.5"
                  }
                ]
              }
            },
            {
              "repo": "https://github.com/perl-catalyst/fcgi",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "5bd9f1f966be0633c27e01f5b0508134d2452f0b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.44"
                      },
                      {
                        "last_affected": "0.82"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "cpe": "cpe:2.3:a:fastcgi:fcgi:*:*:*:*:*:perl:*:*",
                    "range": [
                      {
                        "introduced": "0.44"
                      },
                      {
                        "last_affected": "0.82"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.4.4",
            "2.4.2",
            "2.4.1.1",
            "2.4.1",
            "2.4.0",
            "2.2.3",
            "2.2.2",
            "2.1.1",
            "0.82",
            "0.81",
            "0.80",
            "0.78",
            "0.77",
            "0.76",
            "0.75",
            "0.74",
            "0.73",
            "0.72",
            "0.71_03",
            "0.71_02",
            "0.71_01",
            "0.71",
            "0.70",
            "0.68_02",
            "0.68_01",
            "0.68",
            "0.67_01-RC1",
            "0.67_01"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40907.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:36.860428536Z",
      "provider": "osv",
      "references": [
        "https://cpan.org/modules",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40907.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-40907",
        "https://github.com/FastCGI-Archives/fcgi2/issues/67",
        "https://github.com/perl-catalyst/FCGI/issues/14",
        "https://github.com/FastCGI-Archives/fcgi2/releases/tag/2.4.5",
        "https://patch-diff.githubusercontent.com/raw/FastCGI-Archives/fcgi2/pull/74.patch",
        "https://github.com/FastCGI-Archives/fcgi2",
        "https://www.synacktiv.com/en/publications/cve-2025-23016-exploiting-the-fastcgi-library"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-122",
          "CWE-1395",
          "CWE-190"
        ],
        "cna_assigner": "CPANSec",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40907.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-40907",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504220,
  "published_at": "2025-05-16T13:03:02.774+00:00"
}